State · United States · USGS · BOR · USACE · CDEC
Arizona
61.1% average fill
Measured
10
Volume stored
4,068 hm³
Measured capacity
6,660 hm³
Critical
2
Low level
1
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Reservoirs
Sorted by capacityRoosevelt Lake
lowUpdated 2026-09-11
Lake Mohave
Updated 2026-09-09
San Carlos Reservoir
criticalUpdated 2026-09-10
Lake Havasu
Updated 2026-09-09
Apache Lake
Updated 2026-09-11
Bartlett Reservoir
Updated 2026-09-10
Horseshoe Reservoir
criticalUpdated 2026-09-10
Saguaro Lake
Updated 2026-09-11
Canyon Lake
Updated 2026-09-11
C.C. Cragin Reservoir
Updated 2026-09-10
Storage from official US gauges (USGS, USACE, Bureau of Reclamation, CDEC). Fill % uses design capacity from the National Inventory of Dams where available; a few sites without a match fall back to the 5-year maximum.
About reservoirs in Arizona
As of September 11, 2026, the reservoirs we track across Arizona that report live levels hold roughly 4,068 hm³ of water — about 61.1% of their combined capacity. Taken together, Arizona's reservoirs are within their normal operating range.
Across the region, 2 reservoirs are at critically low levels and 1 is low. Lake Mohave is the fullest at 105.0%, while San Carlos Reservoir is the lowest at 0.2%.
Over the most recent week on record, 1 reservoir fell across Arizona.
Storage figures for Arizona come from USGS · USACE · BOR · CDEC; the most recent reading is from September 11, 2026. Each reservoir below links to its own page with full history and seasonal context.
Arizona at a glance
- Reservoirs tracked
- 10
- Average fill
- 61.1%
- Water stored
- 4,068 hm³
- Combined capacity
- 6,660 hm³
- At critically low levels
- 2
- Fullest
- Lake Mohave (105.0%)
- Lowest
- San Carlos Reservoir (0.2%)
- Last updated
- September 11, 2026